| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0efa077d881a96aeb1e29b21ef1bbb58 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C229-24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C227-06 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C227-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C229-24 |
| filingDate |
1995-09-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1998-05-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ca341c0b61e37ca429a8abf2ff1e0101
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c181b322ec1c2231746b9f35dba6d8b4
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_79ab1d3a9fa82388496670c82bf2ca63
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c7cdc8e8acc07a2ae91c6ad9444cba76
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bc78f21810c58c2d8c660ab22a63e06f |
| publicationDate |
1998-05-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-5756839-A |
| titleOfInvention |
Process for preparing D,L-aspartic acid from ammonium salts of the maleic acid |
| abstract |
A process is disclosed for preparing D,L-aspartic acid by beating aqueous solutions of ammonium salts of the maleic acid. The molar ratio of maleic acid to ammonia ranges from 1:1 to 1:50. The process is carried out at temperatures from 60° to 250° C. and pressures of at least 1 bar. The pressure applied during the reaction is adjusted to ensure that the reaction mixture is almost completely present in liquid phase. Excess ammonia is removed and the reaction solution is acidified so as to release D,L-aspartic acid, which is then isolated. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112661962-A |
| priorityDate |
1994-09-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |